Horace tubrettini



H. TURRETTINI.

HEATING DEVICE.

APPLICATION FILED MAY 22. I918.

Patented Nov. 11, 1919.

F 9 Fy 2.

HORACE TURRETTINI, 0F GENEVA, SWITZERLAND.

HEATING DEVICE.

Application filed May 22, 1918. Serial No. 235,995.

To all whom it may concern:

Be it known that I, HORACE TURRETTINI, gentleman, a citizen ofSwitzerland, residing at Geneva, Canton of Geneva, 1n the Confederationof Switzerland, have invented certain new and useful Improvements in orRelating to Heating Devices, of which the following is a specification.

This invention relates to a heating apparatus and more particularly tothat type of heating apparatus in which lime or other similar substancesare so employed that by the action of water thereon, the heat generatedis utilized in any suitable manner for heating a receptacle which, afterreceiving the heat, may be employed for any des red purpose. Theinvention relates more part1cularly to the manner in which the heatcartridge is formed soas toprevent the lime or other material inexpanding from so enlarging the cartridge that the cartridge may not-bereadily removed from the receptacle or container in which it isutilized, and furthermore, the cartridge is so constructed that in theuse thereof both in inserting and removing the cartridge from thereceptacle, the hands of the user will not be soiled. The heatingapparatus made in accordance with my invention will be hereinafter moreparticularly described.

Figure 1 is an elevation illustrating a device consisting of a porouspacket containing unslaked lime and provided with inextensible bandsarranged to maintain the packet in shape when the lime expands so thatthe packet may be readily removed from acasing.

Fig. 2 is a sectional elevation showing the packet as illustrated inFig. 1 contained within a casing and illustrating the shape the packetassumes after-the unslaked lime has expanded.

Fig. 3 is an elevation of a modified form of casing, and

Fig. 4 is a side elevation of the casing shown in Fig. 3 illustratingthe closure of the casing after having been disengaged.

Referring to the drawing and more par-' ticularly to Figs. 1 and 2, thepacket of lime contained in a porous envelop, shown in Fig.

. 1, and intended for the cylindrical warmer shown in Fig. 2, isprovided with a certain number of inextensible bands e such for example,as twine. When this packet is introduced into the cylindrical metal casea (Fig. 2) containing water, the latter pro- Speciflcation of LettersPatent.

Patented Nov. 11, 1919.

duces an expansion of the lime and of'the porous casing; owing to thebands 6 this expansion is spread over the packet e, so that, as soon asthe lime expands, the packet assumes the shape shown in" Fig. 2 whichfacilitates the removal of the packet from the case a as soon as thecover a is removed.

In the construction shown in Figs. 3 and 4, the rectangular heater a isprovided with a tightly closing cover a held in place by means of aclosure f connected to the cover by rods 9 hinged to the said'cover andprovided with screws h screwed into the closure. The ends of the latterare each provided with-a hook f intended to engage with an inclinedplane a of a lateral projection of the case a. The said shackle f ismoreover made of such a shape as to enable it to be used as a handle forcarrying the heater. The cover a is provided with a springcontrolledsafety valve i intended to become operative in the event of theexpansion of the lime, air and steam producing an excessive pressure inthe case a. The lime packets e can be constituted by one or more casingsof porous fabric or paper.

These porous casings containing lime, can be handled without dirtyingthe fingers, and moreover they prevent the lime from adhering to theinner walls of the metal case, so that it is not necessary to cleanthem.

I claim as my invention:

1. As a new article of manufacture, a heater comprising a receptacle, acover removably connected thereto and a cartridge adapted to be placedin the casing and comprising a wrapper of porous material, a filling ofunslaked lime, and a plurality of bands in spaced positions extendingaround said cartridge and dividing the same into sections so as toprevent the expansion of the cartridge beyond predetermined limits andto maintain the same in substantially cylindrical form while in use sothat it may be readily removed after use from the receptacle.

2. As a new article of manufacture, a heater comprising a. casing havingrelatively thin walls, a cover, means for securing the cover in positionon the casing and a; cartridge adapted to be placed in the casing andcomprising a wrapper of porous material, a filling of unslaked lime, anda plurality of bands in spaced positions extending around said cartridgeand dividing the same into sections so as to prevent the expansion ofthe cartridge beyond predetermined limits and to maintain the same insubstantially cylindrical formwhile in use so that it may be readilyremoved after use from the receptacle.

3. As a new article of manufacture, a heating cartridge comprising acylindrical wrapper of porous material, a filling of unslaked lime and aplurality of bands applied relatively loosely to the said wrapper inspaced positions to prevent the lime in the slaking thereof fromexpanding the cartridge beyond predetermined limits and thus maintaininthe cartridge in substantially its cylindrlcal form.

In testimony whereof I have aifixed my signature in presence of twowitnesses.

HORACE TURRETTINI.

Witnesses:

ELMER SCHMID, Ron. on WURSTENBERG.

